Well, one possibility is that Naruto is taken to the elf world. There, he might learn unique elven magic and combat skills. Maybe the elves recognize his potential and strong will, similar to what his ninja friends saw in him. The elves could help him control the Nine - Tails' power in a different way, perhaps using elven magic. And Naruto would bring his ninja values to the elf community, changing it for the better.
An elf who adopts Naruto could be a main character. This elf might be an elder with great wisdom and magical powers. They see something special in Naruto and take him under their wing. Another character could be an elven child who becomes Naruto's friend. They teach each other about their respective worlds and grow together.
Yes, in some fanfictions, Naruto might be given unique elf abilities like enhanced archery skills, the ability to communicate with nature in an elf - like way, or even having a natural affinity for magic which is often associated with elves.
If Kakashi adopted Naruto, it might change Naruto's path of development. He could receive earlier and more specialized training, and also have a stronger sense of family. This could have a significant impact on his personality and goals.
One possible storyline could be Naruto as an elf trying to fit into the ninja world while still having his elf heritage. He might face discrimination from some who don't understand his different nature.
It could be an evil elf who has been exiled from their own elven community for practicing dark magic. This elf might see the Ninja world as a place to gain more power and cause chaos. They could target Naruto specifically because they sense his strong chakra and want to either steal it or use him as a tool for their evil plans.
Well, in a fanfiction where Naruto marries an elf, their family life would be quite extraordinary. They would probably have to decide where to live, whether in the ninja village or in the elf's forest home. Their children would inherit a mix of both their traits, perhaps having both ninja skills and magical elf abilities. And Naruto would have to learn the elven language and customs to better communicate with his elf spouse and in - laws.
One interesting Naruto and elf fanfiction could be about Naruto stumbling upon an elf village during one of his travels. The elves might be initially wary of him but then come to respect his strength and determination.
In this fanfiction, Naruto might have a very different kind of relationship. Maybe he and the elf would combine their different cultures. For example, Naruto could introduce the elf to the ninja world's values like loyalty and perseverance. And the elf might bring some of their own unique magic or knowledge to Konoha. It could also be a story full of adventures as they face challenges together that are new to both of them.